Lantern



H. W. BISHOP LANTERN Filed Nov. 9, 1952 5 Sheets-Sheet 1 INVENTOR.

BYHOWAED 14/. 5/5/40; M0430 ATTORNEYS.

H. W. BISHOP Aug. 21, 1934.

LANTERN Filed Nov. 9, 1952 3 Sheets-Sheet 2 & @wmmm mm Q Q ATTORNEYS.

H. W. BISHOP Aug. '21, 1934.

LANTERN Filed Nov. 9, 1932 5 Sheets$heet 3 INVENTOR.

G BYHOWHRD M BISHOP M o &

A TTORNE YS.

Patented Aug. 21, 1934 UNITED STATES PATENT 'orrics Application November9, 1932-, Serial No. 641,917

15 Claims. (Cl. 240 3.1)

This invention relates generally to lanterns of the character embodiedin United States Letters Patent No. 1,831,090, issued November 10, 1931,and wherein a van-colored screen is movable relative to a source oflight in a manner to obtain changes in the color of the projected light,all with the object of producing novel and attractive lighting eifects.

. It is a purpose of the present invention to provide a lantern of theabove described character in which the direction of the projected lightcan be varied without disturbing the light source, as is decidedlyadvantageous with the use of certain highly efficient lamps requiringthat they occupy a predetermined position in order to prevent prematurefailure in operation and insure maximum efficiency for a long period oftime.

It is another purpose of the invention to provide a lantern embodying anovel construction, mounting and arrangement of reflectors and screen inan enclosing casing, all to the end of rendering the screen readilyaccessible for changing, as desired.

It is a further purpose of the invention to provide a lantern which, inone of its adaptations, produces a highly eiiicient spotlight, the lightsource, of which is conveniently adjustable to vary the size andintensity of the projected light beam.

Another purpose of the invention is the provision of a lantern which isadjustable, together with its lamps, as a unit to vary the direction ofthe projected light, while rendering the lamps readily accessible forinspection andreplacement.

Two forms of the invention will be described following which the novelfeatures will be pointed.

out in claims.

In the accompanying drawings Figure 1 is a view in front elevationpartly broken away,-of one form of lantern embodying this invention; 7 av Figure 2 is a horizontal sectional view taken on the line 2-2 ofFigure 1, and looking in the direction ofthe arrows;

Figures 3, 4 and 5 are enlarged detail sectional views takenrespectively on the lines 3- -3, 4-4 and 55 of Figure l, and looking inthe directions of the respective arrows; V

Figure 6 is a view in front elevation part1 broken away, of a modifiedform of lantern embodying this invention.

Similar reference characters designate similar parts in each of theseveral views.

Referring specifically to the drawings, and particularly to Figures 1 to5, inclusive, this tom of the invention comprises a base B defined bylegs 10 supporting a vertical pin 11 on which is rotatably mounted ahead 12 in which is secured tubes 13l3 projecting horizontally inparallelism from opposite sides of the head. The'tubes support lamphousings L and L through the 'medium of brackets 14 secured to theopposite end walls of the hous'ing'and provided with sleeves throughwhich the tubes project, the sleeves having set screws 15 which c oactwith the tubes in rigidly securing the housing to the tubes in end toend spaced relation at opposite sides of the head asshown in Figure 1.

The housings L and L are identical in construction, and each housing isprovided withan opening 16 (Figure 2) in confronting and alined'rela -ftion to the opening of the other housing, these openingslbeing formed inthe confronting end walls of the housings and being bounded by collars17v in which are supported condensing lenses 18 illustrated asplano-convex inform. A- cylindrical casing C isconstructed of two matingsections 19 and 20 secured together by bolts 21 (Figure 2) the casinghaving a front opening 22 and lateral openings 23--23 which arediametrically opposed in alinement and are bounded by collars 24telescopically received, respectively, in the collars 1'7 of therespective housings L and L so as to pivotally mount the casing betweenand from the housings for adjustment about an axis passing centrallythrough the openings 16 and 23 of the housings and, casing respectively.7

I In each of thehousings L and L is a lamp 25 the base 26 of which ismounted in a vertical socket 27 provided on a carriage 28 'slidablymountedon horizontally disposed parallel rods 29 and 30, the rod 29being fixed and the rod 30 being rotatably mountedin the end walls ofthe housing. Each of the rods 30 projects exteriorly of the outer end ofthe respective housing L or L and is provided with a crank handle 31 bywhich the rod can be rotated. Each of the rods 30 constitutes a feedshaft and is provided with external threads 32 with which a conicallypointed set screw 3211 on the respective carriage has engagement so thatupon rotation of the rod in one direction or the other the carriage willbe accordingly fed towards or away from the respective condensing lens18.

In each of the housings L and L is a concaveconvex reflector 33 behindthe lamp 25, this re fiector being supported by a carriage 34 slidably.mounted on the rods 29 and 30 and operatively connected to the lampcarriage 28 by an adjusting screw enabling the reflector 33 to be movedtowards and away from the lamp, to the end that with the aforestatedadjustment of the lamp relative to the condensing lens, the size andintensity of the light beam projected by the lamp into the casing can bevaried.

Each of the housings L and L is provided with a door controlled opening36 through which access can be had to the lamp in the housing, and isfurther provided with an air? inlet 37 and air outlets 38--38 enablingair to circulate through the housing and conduct heat generated by thelamp from the housing.

The light projected by the lamps into the casing C from opposite sidesthereof is adapted to be colored and projected from the casing throughthe front opening 22 thereof by the following means.

A shaft 40 is journaled in a bearing 41 supported axially in the casingby arms 42 project--v ing from a ring 43 secured to the rear wall of'the casing. This shaft projects through a relatively large opening 44 inthe rear wall of the casing, and is coupled to a shaft 45 driven by anelectric motor 46 also secured to the rear wall exteriorly of thecasing, the motor being enclosed by'a case 47 having an air inlet 48through which air is drawn during operation of the motor bya fan 49secured to the motor shaft. The air thus drawn into the case 17 isforced into the casing C through its opening 44, and discharges from thecasing through vents 50 and 51 therein, to the end of conducting heatfrom the casing. a

Detachably secured to the outer end of the shaft 40 by a set screw 52 isthe hub 53 of a spoked wheel 54, the rim 55 of which is of slightly lessdiameter than the internal diameter of the casing. A screen Sin the vform of anopen ended tube .of' glass or. othersuitable material is composed of a number of differently colored segmental panels 56, with thosepanels which are,

diametrically opposed being preferably of the same color. One end. ofthis screen is secured to the .rim 55 of the wheel 54 so as torotatably' mount the screen in the casing in the path of light projectedinto the casing from opposite sides thereof by the lamps 25, to the endthat. differently colored panels of the screen will. be

successively presented'to the light beams as the screen rotates. -'Thescreen can be readily inserted and removed from the casing. through thefront opening 22 thereof so that other screens with differently coloredpanels and arrangements thereof can be substituted.

u A holder H in the form of a two part flanged ring supportsatransparent panel 5'7 and. is pro-' vided at. diametrically opposedpoints with openings receiving threaded studs 58 projecting from thelip59 of the casing at the front thereof.

Knurled nuts 60 are adapted to be threaded on the 'studs'58 todetachably'secure the holder to I the casing, with the panel 57closingthefront these. bracketsin substantially right angular re.-

lation-so as to be'disposed at equal and opposite.

anglesto thelight beamsprojected into oppo-j site sides of the casingand through thescreen', are reflectors P,-R havingplane reflectingsurfaces. The reflectorsR-rl't are thus supported by the holder withinthe screen S andare dis,

posed directly in the path of the light beams.

from the lamps so as; to reflect the light beams outwardly of. thescreen and forwardly of the casing through the front opening 22 thereof.The angles of the reflectors to the light beams from the respectivelamps are such that the individual beams will merge into each other at apoint in advance of the casing so as to form a single beam. It will beclear that as the screen rotates, the light projected from the casingwill vary in color as the differently colored panels of the screen ,passacross the beams from the a p The direction in which the light isprojected from the lantern is readily varied in a vertical plane, byadjusting the casing C about the axis of its mounting on the lamphousings L and L. As this adjustment does not disturb the lamps 25 inthe respective housings, highly efficient lamps of a type requiring acertain position in which theyare. to be burned in order to preventpremature failure can be employed in this lantern. The direction inwhich the light is projected from the lantern is varied in a horizontalplane by swinging the lantern as a unit upon the base. .As the lamps 25are intended to be' collars 2 la and 24a on the casing C correspondtothe collars 2424 of the casing C, and have hingedly connected thereto:at' 62 the respective lamp housings L and L Bolts 63 pivoted at 6; onthe collars 24w are provided with wing nuts 65 for 'co-action withthe'hinged connections 62 in securing the lamp housings rigidly to thecasing in position for light beams from lamps 66 in the housings to beprojected in opposite directions into the casing. The housings L and Lare provided with axially disposed trunnions 6'7 at their outer ends,journaled in alined bearings 68 on a U-shaped frame 69piv-noted on' avertical pin '70 rising from the base B to enable the casings andhousings to be' swung about a vertical axis for the purposeof varyingthe direction in' a horizontal plane in which thelig'ht' beam isprojected from the lantern.

The bearings 68 are split'in any suitable man-1 ner enabling the casingand housing to be removed as a'unit from theframe 69, following whichthe wing nuts 65 can be released to permit the housings to be swungabout the hinged connections to open positions so that the lamps 66 canbe readily inspected and replaced when necessary. With the trunnions' 67mount ed in the bearings 68 as shown in Figure 6; it

will be manifest that the casings and housings} can be readily adjustedas a-unit about thecommon axis of the trunnions so as to vary thedirection of the projected light beam in a'verti cal'plane; 7

It is to be understood that the construction of the casing C isotherwise the same as that of the casing C and that'the casing Ccontains the screen S and reflectors P,R. constructed, arranged andoperating'las previously described in connection with the first form ofthis invention, i I j ;Iclaim: H

1. Ina lantern; a pair of spaced apartlamp housings, each having anopening confronting the other; lamps in the housings for projectinglight through-said openings; a casing having oppositely-idisposedopenings; means for pivotally mounting the casing between thehousingsfor adjustment about an axis passing through the openings of thehousings and casing so that light from the lamps can be projected intothe casing irrespective of adjustment of-the latter; and meansin thecasing for reflecting light forwardly from the casing. r I, 2. In alantern; a pair of spaced apart lamp housings; each having an openingconfronting the other; lamps in the housings for projecting lightthrough said openings; a casing having oppositely disposed openings; thehousings andcaS- ing having telescopically associated portions boundingthe openings thereof for pivotally mounting the casing from the.housings for adjustment about an axis passing through the openings sothat light from the lamps can be projected into the casing irrespectiveof adjustmentof the latter; and means in the casing for reflecting lightforwardly from the casing. I 3. In a lantern; a pair of spaced apartlamp housings, each, having an opening confronting the other; lamps inthe housings. for projecting lightthrough said openings; a casing havingoppositely disposedopenings; means-for pivotally mounting the casingbetween the housings for adjustment about an axis passing through theopenings of the housings and casing so that light from the lamps can beprojected into the casing irrespective of adjustment of the latter;means in the casing for reflecting light forwardly from the casing; avari-colored screen; and means for movably mounting the screen in thecasing to present different parts of the screen to light from the lampsas the screen is moved.

4. In a lantern, a pair of spaced apart lamp housings, each having anopening confronting the opening of the other; lamps in the housings forprojecting light through said openings; a casing having oppositelydisposed openings; means for pivotally mounting the casing between andfrom the housings for adjustment about an axis passing centrally throughthe openings of the housings and casing so that light from the lamps canbe projected into the casing irrespective of adjustment of the latter;and means in the casing for reflecting light forwardly from the casing.

5. In a lantern, a pair of spaced apart lamp "i housings, each having anopening confronting the opening of the other lamps in the housings forprojecting light through said openings; a casing having oppositelydisposed openings; means for pivotally mounting the casing between andfrom the housings for adjustment about an axis passing centrally throughthe openings of the housings and casing so that light from the lamps canbe projected into the casing irrespective of adjustment of the latter;and a pair of angularly related reflectors supported in the casing inpositions to reflect light forwardly from the casing.

6. In a lantern, a pair of spaced apart lamp housings, each having anopening confronting the opening of the other; lamps in the housings forprojecting light through said openings; a casing having oppositelydisposed openings; means for pivotally mounting the casing between andfrom the housings for adjustment about an axis passing centrally throughthe openings of the housingsand casing so that light from the lamps canbe projected into, the casing irrespective of adjustment of the latter;a. pair of angularly related reflectors supported in the casing inpositions to reflect light forwardly from'the casing; a vari-oolored andtubularscreen receiving the reflectors and being rotatably mounted inthe casing in the path of light from the lamps; and means for rotatingthe screen to present different parts thereof to the light.

I. In alanterna pair of lamp'housings, each having a collar defining anopening in the respectivehousing; a casing having diametricallyopposed-collars defining openings therein and being telescopicallyassociated withthe respective col,- lars-of the housings to pivotallymount the casing between and from the housings for adjustment; lamps inthe housings for projecting light through said openings into the casing;means in thecasing for reflecting light from the lamps forwardly of thecasing; anda movablymounted vari-colored screen in-the casing,presenting different parts thereof to light from the lamps ,as thescreen is moved.

. 8. ,In a lantern, a pair of lamp housingseach having a collar definingan opening in the respective housing; a casing having diametricallyopposedcollars defining openings therein and being telescopicallyassociated with the respective collars of the housings-to pivotallymount the casingbetween and from the housingsfor adjustment; lamps inthe housings for projecting light through said openings into-the casing;

a pair of angularly related reflectors supported in the casing inpositions to reflect light from the lamps forwardly from the casing; anda varicolored and tubular screen receiving the reflectors and beingrotatably mounted to present different parts thereof to light from thelamps as the screen is rotated.

9. In a lantern, a casing having a front opening; a vari-colored andtubular screen rotatably mounted in the casing; a lamp for projectinglight through the screen from a location exteriorly and laterally of thescreen; means for rotating the screen to present different parts thereofto the light as the screen is rotated; a transparent panel for saidopening; a holder for supporting said panel in spanning relation to theopening; areflector; and means for supporting the reflector from theholder with the reflector disposed in the screen in a position toreflect light from the lamp outwardly of the screen through said panel.

10. In a lantern, a casing having a front opening; a vari-colored andtubular screen rotatably mounted in the casing; a lamp for projectinglight through the screen from a location exteriorly and laterally of thescreen; means for rotating the screen to present different parts thereofto the light as the screen is rotated; a transparent panel; a holder forsaid panel; a reflector supported by the holder; and means for securingthe holder to the casing with the panel spanning said opening and thereflector disposed Within the screen to reflect light from the lampoutwardly of the screen through said panel.

11. In a lantern; a casing having a front opening; a vari-colored andtubular screen rotatably mounted in the casing; a lamp for projectinglight through the screen from a location extericrly and laterally of thescreen; means for rotating the screen to present different parts thereofto the light as the screen is rotated;-a transparent panel; a holder forsaid panel; a 150 reflector supported by the holder and insertable intothe screen as the-holder is applied to the casing; and means fordetachably securing the holder to the casing with the panel spanningsaid opening and the reflector disposed to reflect light from'the lampoutwardly of the screen through said panel.

12. In a lantern, a casing having a front opening and oppositelydisposed lateral openings; lamps exteriorly of the casing for projectinglight through said lateral openings into the casing; means forpivotally'mounting the casing upon a transverse axis passing throughsaid openings so that light from thelamps can be projected into thecasing irrespective of adjustment of the latter; means in the casing forreflecting light from the casing through the front opening thereof; anda vari-colored and tubular screen rotatably mounted in; the casing in aposition to present different parts of the screen to light from thelamps as the screen is rotated. '13. In a lantern, a casing having afront opening and oppositely disposed lateral openings; lamp housingssecured to the casing in surrounding relation to the lateral openings ofthe latter; lamps in the housings for projecting light therefrom throughthe lateral openings of the casing into the latter; means in the casingfor reflecting light from the lamps through the front opening of thecasing; a vari-colored screen movably mounted in the casing to presentdifferent parts to light from the lamps as the screen is moved; alinedtrunnions on the lamp housings; and a support in which said trunnionsare journaled topivotally mount the casingand housings for adjustment asa unit.

MI'In a lantern, a casing having a front opening and oppositely disposedlateral openings; a pair of lamp housings having trunnions; lamps in thehousings; means for pivotally mounting the housings on the casing tooccupy an open position for access to the lamps, and a closedpositionover said openings and wherein the trunnions are disposed inaliriement;means for securing the housings in closed position; a support in whichsaid trunnions are journaled to pivotally mount the casing and housingfor adjustment'as a unit; means in the casing for refleeting lighttherefrom through the front opening thereof; and a vari-colored screenmovably mounted in the casing to present diiferent parts' to light fromthe lamps as the screen is moved.

1 5. In a lantern, two light sources each projecting a beam of lighttowards the other; 'a vari-colored and tubular screen rotatably mountedbetweenthe' light sources in the path of said light'beams therefrom topresent different parts of the screen to the light beams as the screenis rotated; means for reflecting the light beams in a general directionforwardly from the screen following passage of the beams through thescreen; and means for mounting the screen and reflecting means foradjustment about an axis passing through the light sources.

HOWARD w. BISHOP. 1

